From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.9 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1, USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21B40C2BB1D for ; Wed, 15 Apr 2020 00:06:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F014D2076B for ; Wed, 15 Apr 2020 00:06:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="rqKtzwFZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392229AbgDOAGj (ORCPT ); Tue, 14 Apr 2020 20:06:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2634556AbgDOAFD (ORCPT ); Tue, 14 Apr 2020 20:05:03 -0400 Received: from mail-pl1-x643.google.com (mail-pl1-x643.google.com [IPv6:2607:f8b0:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 042DEC061A0F for ; Tue, 14 Apr 2020 17:05:03 -0700 (PDT) Received: by mail-pl1-x643.google.com with SMTP id h11so567633plr.11 for ; Tue, 14 Apr 2020 17:05:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:in-reply-to:message-id:references :user-agent:mime-version; bh=KR6uSQVGwCyM0LnuYfYFDEMfJVon1ni6IuCovgn4/s0=; b=rqKtzwFZVZWUOiIrgJExufYVXu3Tq6MqN9fZu+ZH2YWZFYDd36z9cKaQb1z64mO7tH MqHd3c/DVdGpEppY6hDK2NUcvYFc9GB0boflgmYFjwRnXpj7C88Raa2vtIKHZltPbaZY Yq4XjmwAMnLhc5OAOpmyCEprZER5wgs9TG0NXMxxpAvZslYPLWReI9hEIrUglD3v33nE uvdcK2H6ZpBcTwk6YibzffwOAU+UcafvBxlbh/n+dtdh5ojeU1wXawqu+7tuuraTSg2r hAMC56p50b97myh5kSGVE5o5KJpXUH8ugjcM1X8zg5XSTobhilOhGVEwO0sF61kP7SMB 57ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:in-reply-to:message-id :references:user-agent:mime-version; bh=KR6uSQVGwCyM0LnuYfYFDEMfJVon1ni6IuCovgn4/s0=; b=IjhZKlYgBZh/GBkvoJpYNEXQvfF/XZWaVbuzd70CA1ytLybHQunDKuGW70zgOTxbWE Y9+Xca/0+nfzBZ6fMwDMJAmanixdS7C7S+RHRZyDWzh6QVh9RVQlTTKh1CRoejIuJhqj v3w10Y+rpkbq9m4JYzurxNssM7i3Q0VHi1QUgD+tsmmAMaBVTRZc+m3XWKdglUEP/ivD sgQ/OXPHuI+yKPGSqdPEQ3GPI8RnrbUQBb8qC6FF0GMlIe6kX4qvh1Zr3XfxUvaZ1/Yh EqQrED/g2LJEbthgXEg+DYg9Rz+MrFNFHoGqG7mHpZMQXCnH6jIKIVG/L9hwfcgO4VbY UKHA== X-Gm-Message-State: AGi0PuZzFTzuAiRjA5/JhHUGWKUOH9R8wuXuTbL8C/QN0Ld8WFk51FHn 2+ntp8bfDO5YxL+stAwPXFHf2cxW+Io= X-Google-Smtp-Source: APiQypITsrLE30A4dNLnVHx0jF/AXyPl+UHgHDtx9Gu90EvJXODyZih95z0Ar2V67vHkb70mSHKTvg== X-Received: by 2002:a17:90a:22e9:: with SMTP id s96mr2911139pjc.46.1586909102385; Tue, 14 Apr 2020 17:05:02 -0700 (PDT) Received: from [2620:15c:17:3:3a5:23a7:5e32:4598] ([2620:15c:17:3:3a5:23a7:5e32:4598]) by smtp.gmail.com with ESMTPSA id z7sm7286945pfz.216.2020.04.14.17.05.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Apr 2020 17:05:01 -0700 (PDT) Date: Tue, 14 Apr 2020 17:05:01 -0700 (PDT) From: David Rientjes X-X-Sender: rientjes@chino.kir.corp.google.com To: Christoph Hellwig , Tom Lendacky cc: Brijesh Singh , Jon Grimm , Joerg Roedel , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org Subject: [patch 6/7] x86/mm: unencrypted non-blocking DMA allocations use coherent pools In-Reply-To: Message-ID: References: User-Agent: Alpine 2.22 (DEB 394 2020-01-19) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When CONFIG_AMD_MEM_ENCRYPT is enabled and a device requires unencrypted DMA, all non-blocking allocations must originate from the atomic DMA coherent pools. Select CONFIG_DMA_COHERENT_POOL for CONFIG_AMD_MEM_ENCRYPT. Signed-off-by: David Rientjes --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1d6104ea8af0..2bf2222819d3 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1520,6 +1520,7 @@ config X86_CPA_STATISTICS config AMD_MEM_ENCRYPT bool "AMD Secure Memory Encryption (SME) support" depends on X86_64 && CPU_SUP_AMD + select DMA_COHERENT_POOL select DYNAMIC_PHYSICAL_MASK select ARCH_USE_MEMREMAP_PROT select ARCH_HAS_FORCE_DMA_UNENCRYPTED